Internal vs. External Validity: Why Your Internal Linking Tests Keep Giving You Wrong Answers
Internal validity asks whether your test actually measures what you think it measures—whether changes in rankings came from your link...
Category: Case Studies & Tests
Real experiments with real data. What actually moved the needle, what tanked, traffic screenshots, ranking timelines. No theory – results.
10 articles
Why Your Structured Data Still Isn’t Triggering Rich Results (Testing Strategies That Actually Work)
Run your structured data through Google’s Rich Results Test, then deploy it live and monitor Search Console’s Enhancement reports—validators confirm...
Migration Systems That Actually Preserved SEO Traffic: What Worked and What Failed
Map every existing URL to its new destination before launch, documenting the logic behind consolidations, splits, and structural changes. Build...
We Tested Internal Links for 6 Months and Changed How We Build SEO Campaigns
Internal linking remains one of the most undervalued levers in SEO—not because practitioners doubt its value, but because hard evidence...
We Tested Google’s Backlink Algorithm With 847 Links (Here’s What Actually Moved Rankings)
Most backlink advice recycles the same theoretical frameworks—domain authority pyramids, ideal anchor ratios, outreach templates—without showing whether any of it...
We Changed One Word in Our Title Tag and CTR Jumped 47%
Improve your organic click-through rate by 20-40% and watch your rankings climb without building a single backlink. Google rewards pages...
Core Web Vitals Testing: What Actually Works in Production
Test Core Web Vitals in production using Chrome User Experience Report (CrUX) data via PageSpeed Insights or Search Console—real user...
We Deleted 40% of Our Content and Traffic Went Up: Two Pruning Experiments
Content pruning delivers measurable traffic gains when executed with precision, but methodology matters. These two case studies demonstrate opposing approaches—strategic...
Why Your Internal Linking Test Might Be Wrong: Z-Test Assumptions Explained
Check your sample size first: z-tests require at least 30-40 observations per variant to produce reliable results, though SEO experiments...
This SEO Recovery Method Rescued Sites Hit by Google’s Core Updates
Google core update recovery isn’t speculation—it’s documented, repeatable work. This collection curates proven case studies where sites regained 40–300% of...